Specify which branch to take first in the branch-and-bound algorithm for decision variables in an lpSolve linear program model object.
set.branch.mode(lprec, columns, modes)an lpSolve linear program model object.
a numeric vector containing values from the set {1, …, n} (where n is the number of decision variables in lprec) specifying which columns to set the mode for.
a character vector composed of the strings {"ceiling", "floor", "auto", "default"} giving the branch modes for the decision variables specified in columns. Please see the reference for a description of these terms.
a NULL value is invisibly returned.